APPLIED MULTIVAR METHODS
APPLIED MULTIVAR METHODS MGMT 643
Virginia Commonwealth University
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Timmy Eichmann IV
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This 1 page Class Notes was uploaded by Timmy Eichmann IV on Wednesday October 28, 2015. The Class Notes belongs to MGMT 643 at Virginia Commonwealth University taught by Robert Andrews in Fall. Since its upload, it has received 21 views. For similar materials see /class/230690/mgmt-643-virginia-commonwealth-university in Business, management at Virginia Commonwealth University.
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Date Created: 10/28/15
Discriminant Analysis for 2 Groups A Note on Using Misclassi cation Cosm RL Andrews Consider two groups labeled 1 and 2 Let p denote the proportion ofthe tota1 in group 1 ande denote the proportion ofthe tota1 in group 2 p and p2 are the prior probab es ofan itern being in the respective groups c21 is the cost of rniselassifieation for sayin that an itern from group 1 is in group 2 c12 is the cost ofrniselassi eation for saying that an itern from group 2 is in group 1 De ne a constant K such that Kamp c12 SPSS 39 39 39 39 to t io 39 r L K to adju pio r 39 39 39 39 39 39 costs Therefore a er the adjustrnent for rniselassifieation costs 1the input prior for L and the input prior for group 2 is 72 pi K 91Kpz one prefers to use c21 and c12 rather than K then the input prior for group 1 lsc 2 1 pZC 1 2 P1C2 1Pzc1 2 P1C2 1Pzc1 239 However if r r39 in oup239 To enter these values in SPSS set up the ana1ysis using the rnenus see the next efos 39t39 c1sif i a RaceaiRespandz es 7 1 diisLireExcmnngL Nnmaeinunuei inag a g i swear the 691 an new 2 A Huhewreavsw E yusueenonunsm 1 lunhesWesisehr WW W 5 g ueeuonunsmne 7 if dim Fedeva WWI gmev independents Aageihev We H obsesieowseneihad girauaeyuaeyi seienianvhnue m 1 1 rhe rnenu for classify button provides only two options for specifying prior probabilities as is shown on the next page